http://www.cylinder-barrel.com/hydraulic-cylinder-rod/hollow-chrome-plated-bar/ PRODUCT INTRODUCTION Hollow Chrome Plated Rod - Hollow Piston Rod锘?/p> 鈼忥豢 锘緼 higher Yield Strength, with good weld-ability. 鈼忥豢 锘縀asy for mechanical property and the Low Temperature Enduring Assault Performance better that generally tubes . 鈼忥豢 锘縏he internal precise ground and the external hard chrome plated after precise grinding, that tolerance meet with international standards. 1. Commodity: hollow piston rod for telescopic cylinder 2. Available steel gardes: SAE/AISI1020, 1026, 1518,1045,4130,4140,4145,4340, ENE355,C45E,25CrMo4,42CrMo4,CK45,S45C DINST52 3. Machining&turning:as per drawings. 4. Hard chrome plating: thickness and hardness as per requirement. 5. Diameter tolerance: ISO f7. 6. Surface roughness: Ra0.25um max or Ra0.4um max at the option of the buyer. 7. Standard export packing: By plywood boxes 8. Customized packing or marking are available upon request. 9. Diameter: 6mm - 1000mm 10. Length: 1000mm - 8000mm 11. Tensile strength: Not less than 610 N/MM2 12. Yield strength: Not less than 355 N/MM2 Product Process Cold drawn---blanking---straightening---coarse grinding---heat treatment---straightening---CNC blank---finishing---half coarse grinding---half fine grinding---fine grinding---fine polishing---plating---fine grinding---fine polishing---full inspection Chrome Hollow Bar Size List: all dimensions are by metric ID脳ODID脳ODID脳ODID脳ODID脳ODID脳ODID脳ODID脳ODID脳OD 20脳3030脳4035脳4138脳5040脳5050脳6050脳7060脳7060脳80 63脳7565脳8070脳8070脳8580脳9580脳10085脳100100脳115100脳120 100脳125110脳125125脳140125脳150140脳160150脳170150脳180160脳180160脳190 180脳200200脳230250脳290 鈽匫ther Specification and requirement can be customers make. Detailed Description 1.CHEMICAL COMPOSITION MaterialC%Mn%Si%S%P%V%Cr% Ck450.42-0.500.50-0.800.040.0350.035-- ST520.221.60.550.0350.04-- 20MnV60.16-0.221.30-1.700.10-0.500.0350.0350.10-0.20- 42CrMo40.38-0.450.60-0.900.15-0.400.030.03-0.90-1.20 40Cr0.37-0.450.50-0.800.17-0.37---0.80-1.10 2.MECHANCIAL PROPERTIES MaterialT.S N/MM2Y.S N/MM2E%(MIN)CHARPYCONDITION CK4561035515>41JNORMALIZE CK4580063020>41JQ + T ST5250035522-NORMALIZE 20MnV675059012>40JNORMALIZE 42CrMo498085014>47JQ + T 40Cr100080010-Q + T Our Advantages 1. Advanced production equipment: cold drawing machine, honing machine, skiving & roller burnishing machine, straightening machine, polishing machine, heat treatment furnace, grinding machine, etc. We have professional technicians do regular scheduled maintenance on these machines to guarantee them work well. 2. High quality raw material: our raw material mainly from some famous steel mills, such as TPCO, BAO STEEL, SHA STEEL, which are best and largest raw material manufacturer in China. 3. Strict quality control: we have professional in-house QC to inspect all products. We will do Chemical Composition Test, Mechanical Property Test, Dimension Inspect, Roughness Test, Chrome Layer Test and other tests in need before delivery. 4. Best after-sale service: each order from production to delivery will be follow up in time.Hollow Chrome Plated Bar website:http://www.cylinder-barrel.com/hydraulic-cylinder-rod/hollow-chrome-plated-bar/